典型电子废物处置场地表层土壤中的德克隆阻燃剂研究  

Dechlorane plus levels and isomer profiles in surface soils from a typical electronic waste dismantling area in China

作　　者：任玥[1] 许鹏军[1] 齐丽[1] 周志广[1] 李楠[1] 郑森[1] 张辉[1] 黄业茹[1] 

机构地区：[1]国家环境分析测试中心国家环境保护二噁英污染控制重点实验室,北京100029

出　　处：《中国环境科学》2013年第8期1420-1425,共6页China Environmental Science

基　　金：环保公益性行业科研专项(201109001);国家"973"项目(2009CB421602)

摘　　要：以我国广东省汕头市贵屿镇典型电子废物处置场地为研究区域,对其表层土中的德克隆(DP)阻燃剂的污染水平及分布模式进行了研究.结果表明,DP在全部23个表层土样品中均被检出,浓度范围为0.308-209ng/g,东南部地区的污染水平显著高于西北部地区,各区域的污染水平也存在一定差异.DP浓度最高点(209ng/g)和次高点(46.2ng/g)均位于主要从事电子废物手工拆解及物理破碎的片区.表层土样品中anti-DP质量分数(fanti)的变化范围为0.444-0.754(平均值:0.652±0.064),同DP工业品中的fanti值(0.65)不存在显著性差异,表明在表层土中不存在明显的异构体选择性降解.不同的电子废物处置方式对各片区表层土中DP的分布模式影响不明显.Dechlorane plus （DP） concentrations and isomer profiles were investigated in surface soil samples from a typical electronic waste dismantling area, Guiyu of Guangdong Province located in the south of China. DP was detected in all twenty-three samples. The DP concentration ranged from 0.308 to 209ng/g. Overall, the concentration levels in the south-east of this region were significantly higher than those in the north-west and varied among the sampling sites within each studied area of this region. The highest and second highest concentration of DP were found in the district where most of the families were engaged in manual disassembly and physical smash of electronic equipments （209ng/g and 46.2ng/g, respectively）. The fractional abundance of the anti-DP isomer （fanti） in all samples ranged from 0.444to 0.754 （mean： 0.652±0.064）, very close to that of the commercial product （fanti=0.65）.The similar fanti values indicated that there was no obviously selective degradation of DP in surface soil. And the different dismantling manners adopted in each studied area had no obvious influence on DP isomer profiles in surface soils.

关 键 词：氯代阻燃剂 德克隆(DP) 表层土 电子废物处置场地 

分 类 号：X131.3[环境科学与工程—环境科学]